Preparation of iron nanoparticles-loaded Spondias purpurea seed waste as an excellent adsorbent for removal of phosphate from synthetic and natural waters

Arshadi, M.; Foroughifard, S.; Gholtash, Jamileh Etemad; Abbaspourrad, Alireza

doi:10.1016/j.jcis.2015.04.019

Cited by 47 publications

(15 citation statements)

References 13 publications

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“…According to the values of correlation coefficients listed in Table , the adsorption kinetics of RB5 onto Al 2 O 3 @TiO 2 was better described by the pseudo‐second‐order kinetics ( R 2 = 1) than those of other two models. Similar results were observed in RB5 adsorption on magnetic chitosan resins and walnut activated carbon . These results proposed that the pseudo‐second‐order adsorption mechanism was predominant and were controlled by the chemisorption process .…”

Section: Resultssupporting

confidence: 83%

Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites

Deng

Zhang

Cao

et al. 2018

Env Prog and Sustain Energy

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In this study, mesoporous Al2O3@TiO2 nanocomposites were synthesized via two successive precipitation methods. Due to the coated TiO2 layer, the Al2O3@TiO2 exhibited a significantly enhanced efficiency for the removal of reactive black 5 dye (RB5). The morphology and compositional characteristics of Al2O3@TiO2 were investigated by TEM, HRTEM, XRD, EDS, FTIR, BET, and zeta‐potential analysis. TEM photos illustrated that TiO2 film covered Al2O3, XRD suggested compositional phases of γ‐Al2O3 and anatase TiO2, and BET measurement confirmed its characteristic of the mesoporous material. Al2O3@TiO2 was applied as an adsorbent to remove RB5 from aqueous solution, and the adsorption isotherms fitted well to the Langmuir isotherm model. The photocatalysis experiments confirmed that Al2O3@TiO2 had the good photocatalytic performance for degrading RB5 and the hydroxyl radical was the major active group. The UV–Vis adsorbance spectra demonstrated that this Al2O3@TiO2 could incompletely degrade RB5 dye under natural indoor light simultaneously when adsorption occurred. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S230–S242, 2019

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Section: Resultssupporting

confidence: 83%

Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites

Deng

Zhang

Cao

et al. 2018

Env Prog and Sustain Energy

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“…In the pH range investigated (3)(4)(5)(6)(7)(8)(9)(10)(11), HPO 4 22 and H 2 PO 2 4 were the major phosphate species in the aqueous phase under such conditions. Increasing pH value reduced the adsorption of phosphate by this composite, and the similar results were also reported by Liu and Zhang [28] and Arshadi et al [29]. At low pH values (<pHpzc of this adsorbent), the surface of this adsorbent was positively charged.…”

Section: Effect Of Ph Value On Adsorptionsupporting

confidence: 89%

“…The surface of the adsorbent will be negatively charged above pHpzc and positively charged below pHpzc. Increasing pH value reduced the adsorption of phosphate by this composite, and the similar results were also reported by Liu and Zhang [28] and Arshadi et al [29]. More, the according pH values before and after adsorption were investigated and shown in Figure 3d.…”

Section: Effect Of Ph Value On Adsorptionsupporting

confidence: 87%

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

Wang

Liu

et al. 2017

Env Prog and Sustain Energy

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Zr(IV)‐crosslinked HACC/BT composite was prepared and characterized by FTIR, XRD, and SEM techniques. This composite was applied for the adsorption of phosphate ions from aqueous solutions. The factors of various parameters including adsorbent dosage, pH, competing anions, and contact time affecting phosphate adsorption were studied. The adsorption isotherm data were well described by both Langmuir and Freundlich models, and the maximum monolayer adsorption capacity for phosphate was estimated to be 65.35 mg/g at 293 K and natural pH. Kinetic experiments demonstrated that phosphate adsorption fitted better with a pseudo‐second‐order model. The adsorption mechanisms included the electrostatic interaction, ligand exchange, and hydrogen bond formation between phosphate and this composite. Thermodynamic parameters confirmed the exothermic and spontaneous nature of the phosphate adsorption. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 267–275, 2018

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“…The value of the Gibb's free energy in this work at all temperatures is negative except for MgO‐C at 298 K, which shows that the phosphate adsorption is favorable and spontaneous while nonspontaneous at 298 K for MgO‐C. The positive Δ H value shows the endothermic nature of the phosphate adsorption, and positive value of the Δ S shows that the randomness of material increased with the increase in number of molecules during the adsorption process at an interface between MgO, and phosphate by the active sites …”

Section: Resultsmentioning

confidence: 61%

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

Ahmed

Iqbal

2018

Global Challenges

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Phosphate ions are responsible for eutrophication in drinking and wastewater, so it is necessary to limit the phosphate concentration in water bodies to limit the eutrophication problem. Porous magnesium oxide (MgO) nanosheets are synthesized at room temperature by simple precipitation and calcination. The synthesized material is characterized by various techniques. The sheet‐like MgO and commercial MgO are evaluated by the batch adsorption test. The synthesized material has an efficient adsorption efficiency of 95% at pH 5 as compared with commercial MgO, having a removal efficiency of 24% under the same investigated conditions. The synthesized MgO can be an efficient adsorbent material to overcome the eutrophication problem of the waste/domestic water.

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Preparation of iron nanoparticles-loaded Spondias purpurea seed waste as an excellent adsorbent for removal of phosphate from synthetic and natural waters

Cited by 47 publications

References 13 publications

Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites

Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

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Preparation of iron nanoparticles-loaded Spondias purpurea seed waste as an excellent adsorbent for removal of phosphate from synthetic and natural waters

Cited by 47 publications

References 13 publications

Decolorization of Reactive Black 5 by Mesoporous Al2O3@TiO2 Nanocomposites

Decolorization of Reactive Black 5 by Mesoporous Al2O3@TiO2 Nanocomposites

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

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Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites

Decolorization of Reactive Black 5 by Mesoporous Al₂O₃@TiO₂ Nanocomposites